TELEPHONE
Building Entrance 5-Pin Modules

3B1E-BAL & 4BIE-PTC/BAL Series

Balanced Operation - Heavy Duty with self-Resetting Current Limiters

Description:

The 3B1E-BAL and 4B1E-PTC/BAL premium series of 5 pin, 3 element protector modules are designed to provide superior transient and power fault protection for most standard telephone line applications. The common chamber, 3 electrode gas tube provides true
balanced operation. An over voltage on either side of the circuit enables the entire tube to ionize which provides a simultaneous path to ground for both sides of the circuit. This grounding prevents a second arriving transient on the opposite side to pass through to the
equipment. Nominal breakdown voltage for the 3B1E/4B1E series is 350VDC.

Application:

The 3B1E-BAL and 4B1E-PTC/BAL premium series are well suited to applications with building entrance terminals as well as central office protectors. The PTC option is recommended for protection against overcurrent situations where the fault voltage is lower
than the breakover voltage of the three element gas tube device.

Features Benefits

Heavy duty surge handling capability Superior common chamber design

Rugged, dependable operation

Reduced service calls than 2 element designs

Balanced operation

Prevents damage by "lagging" or sneak transients

UL listed Documented safe performance

SPECIFICATIONS

*BIE-BAL

*B1E-BAL

DC Breakdown (nominal)

Capacitance

@100V/Ásec

350V

1Vrms@1KHZ, 50VDC

<1pf

Impulse Breakdown Voltage

Insulation Resistance

@ 100V/Ásec

700A

@50VDC

>100M ohms

@1KV/Ásec

150AV

Fail-
safeOperation

DC Holdover Voltage

135V

@1.0 A

<50 sec

<150rms

@5.0 A

<15 sec

Surge life
(min operations)

@20 A

<10 sec

@10A, 10 x 1000 Ásec

>3000

@60 A

<3 sec

@100A, 10 x 1000 Ásec

>300

10kA, 8 x 20 Ásec

10

Current Limiting (-PTC) 4B1E only

@20kA, 8 x 20 Ásec

1

Hold current (ma) @20C=

145

@65Arms, 11 cycles, 130A total

1

R min/Rmax ohms=

3/6

@10 Arms, 1 sec

10

1surge rating is 2x with respect to ground during a simultaneous surge2service life requirement as per Bellcore TR-NWT-00013613pin alloy refers to tip and ring pins. Unless otherwise noted, all ground pins are tin